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CHAPTER5 MEMORIES AND FILES USED FOR CPU MODULE
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5.1 Memories Used for CPU Module
5.1.10 Specifying valid parameters (parameter-valid drive setting)
(2) When to determine valid parameters
The CPU module automatically searches for parameters in the following timing and operates by the settings of
the parameters stored in the drives when:
• the CPU module is powered off and then on, or
• it is reset.
When storing parameters by Write to PLC in GX Developer, the timing for validating the parameters depends on
the drive that stores the parameters.
(a) When parameters are stored to the drive different from the one that stores the parameters in
operation
The parameters are validated according to the priority set to the drive after the CPU module is powered off and
then on or is reset.
(b) When parameters are stored to the drive same as the one that stores the parameters in
operation
Only the setting made in the Device tab of the PLC parameter dialog box is validated after “Write to PLC” is
performed.
To validate all parameter settings, power off and then on or reset the CPU module.